Full Stack Engineer

Harnham - Data and Analytics Recruitment; Nottingham; On-site; GBP 60,000 - 80,000; Full time

Benefits offered by this job

Competitive salary

On-site London – King's Cross

Job summary

Harnham - Data and Analytics Recruitment is seeking a Full Stack Engineer to join a high-growth technology team in London. You will own end-to-end development of an AI-powered enterprise platform, working across React, Python, AWS and modern cloud tech.

You will design full-stack features, implement secure auth, integrate with third-party systems, and collaborate with AI specialists to deliver enterprise-grade capabilities with robust CI/CD and security practices.

Qualifications

• Strong commercial experience building full‑stack applications in production environments.
• Advanced TypeScript and React development skills.
• Strong Python backend development experience using FastAPI or Django.
• Excellent PostgreSQL and SQL expertise, including data modelling and optimisation.
• Experience building secure authentication and RBAC systems.
• Knowledge of AWS or comparable cloud platforms.
• Experience with containers, CI/CD, and modern engineering practices.
• Interest in AI-enabled software products and related tooling.

Responsibilities

• Design, build, and deliver full‑stack product features across frontend, backend, and database layers
• Develop complex user interfaces using TypeScript and React
• Build and maintain scalable Python services and REST APIs using FastAPI or Django
• Design and optimise PostgreSQL databases, including schema design, migrations, and query performance
• Develop secure authentication, authorisation, and access control systems for enterprise applications
• Build integrations with third‑party platforms such as Microsoft 365, CRMs, HR systems, and document management tools
• Collaborate with AI specialists to deliver AI‑enabled product features and workflows
• Create reliable event‑driven services, background processing systems, and real‑time application functionality
• Contribute to cloud‑native applications running on AWS
• Champion software quality through testing, code reviews, security best practices, and CI/CD processes

Skills

Full stack

TypeScript

React

Python

PostgreSQL

AWS

CI/CD

Security

Software architecture

Tools

FastAPI

Django

PostgreSQL

Terraform

Kubernetes

OpenAI tooling

Job description

Full Stack Engineer

£60,000 - £80,000

King's Cross, London (3 days a week)

This is an opportunity to join a high-growth technology business developing AI-powered software for enterprise clients. Working as part of a senior, high-performing engineering team, you will play a key role in building and scaling a sophisticated platform that combines modern software engineering with cutting-edge AI capabilities. You'll have significant ownership, direct influence on product direction, and the chance to work on technically complex challenges from day one.

THE COMPANY

They are a technology-led organisation developing innovative software solutions that help businesses unlock greater value from their data, workflows, and decision-making processes. Their platform combines AI, automation, and enterprise-grade engineering to deliver impactful products for a demanding client base. Operating with a collaborative and high-accountability culture, they offer engineers the opportunity to work closely with senior leadership and contribute directly to product growth. Their environment encourages ownership, technical excellence, and continuous learning.

THE ROLE

As a Full Stack Engineer, you will build and scale an AI-powered enterprise platform, owning end-to-end product development across React, Python, AWS, and modern cloud technologies.

Specifically, you can expect to be involved in the following:

• Design, build, and deliver full-stack product features across frontend, backend, and database layers
• Develop complex user interfaces using TypeScript and React
• Build and maintain scalable Python services and REST APIs using FastAPI or Django
• Design and optimise PostgreSQL databases, including schema design, migrations, and query performance
• Develop secure authentication, authorisation, and access control systems for enterprise applications
• Build integrations with third-party platforms such as Microsoft 365, CRMs, HR systems, and document management tools
• Collaborate with AI specialists to deliver AI-enabled product features and workflows
• Create reliable event-driven services, background processing systems, and real-time application functionality
• Contribute to cloud-native applications running on AWS
• Champion software quality through testing, code reviews, security best practices, and CI/CD processes

SKILLS AND EXPERIENCE

The successful Full Stack Engineer will have the following skills and experience:

• Strong commercial experience building full-stack applications in production environments
• Advanced TypeScript and React development skills
• Strong Python backend development experience using FastAPI, Django, or similar frameworks
• Excellent PostgreSQL and SQL expertise, including data modelling and optimisation
• Experience building secure authentication and role-based access control systems
• Knowledge of AWS or comparable cloud platforms
• Experience with containers, CI/CD, and modern engineering practices
• Strong understanding of scalable software architecture and technical decision-making
• Experience using AI development tools and an interest in AI-enabled software products

Desirable experience includes:

• Next.js and Node.js
• Redis, WebSockets, OpenSearch, or Elasticsearch
• Background processing frameworks such as Celery
• Kubernetes or Terraform
• LLM-powered applications and AI workflow development
• Experience in regulated or security-focused environments

BENEFITS

The successful Full Stack Engineer will receive the following benefits:

• Salary between £60,000 - £80,000 - depending on experience